D32/100
Eagle Butte Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 6,190 residents · South Dakota
What's In Eagle Butte's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Maximum contaminant level violation
When: November 15, 2024 – October 30, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – March 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
EAGLE BUTTE
Population Served
4,000
Water Source
Purchased Surface Water
System ID
SD4600010
TRI-COUNTY RURAL WATER SYSTEM
Population Served
2,190
Water Source
Surface Water
System ID
SD4600112
Frequently Asked Questions About Eagle Butte Water
Is Eagle Butte tap water safe to drink?
Eagle Butte, South Dakota tap water receives a grade of D (32/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 90 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Eagle Butte's water?
Of the 31 contaminants tested in Eagle Butte's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Eagle Butte have any water quality violations?
Yes, Eagle Butte has 90 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, MR, MON. 18 of these are health-based violations, which are the most serious category.
Do I need a water filter in Eagle Butte?
Eagle Butte water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Eagle Butte's tap water come from?
Eagle Butte's drinking water is sourced from purchased surface water and supplied by EAGLE BUTTE and 1 other water system(s). The system serves approximately 6,190 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Eagle Butte's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Eagle Butte's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Eagle Butte's water compare to other cities in South Dakota?
Eagle Butte's water quality score of 32/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our South Dakota state page to see how all cities in the state compare.
What should I do if I'm concerned about Eagle Butte's water quality?
If you have concerns about Eagle Butte's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (EAGLE BUTTE) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.